I really mean it! What would you be able to do if SOPA/TPP censors the internet? What would you be able to do if writing fanfics and drawing fanarts become illegal? What would you do if it's illegal to do a cover of your favorite song on YouTube? What would you do if downloading things from the internet (music, movies, TV episodes, etc) became illegal? What would you do if SOPA/TPP wins the war and takes away internet freedom? Net Neutrality is already dead so far, we can't risk the freedom of internet from getting killed by SOPA/TPP!

SOPA may have been stopped, but large companies with many copyrights are trying to re-institute portions of it under other names and policies. This attempt to limit protected speech in the name of copyright is unacceptable, and must be resisted.

The two terms are not interchangeable. This soapbox is intended to help you learn to tell the difference if you can't already.

The primary difference is in architecture. Castles were built as forts; they have narrow windows, drawbridges, murder holes, etc. Dover Castle is an excellent example. Palaces were built as places of residence so they tend to be much more sprawling and lacking in drawbridges and barbicans.

Another difference is in location. Palaces were not built in hostile territory since they were intended to be residences whereas castles were used as outposts from which a lord could exercise control of the surrounding territory.

Castles and palaces could either be built in a city- like the one in Canterbury- or in more remote locations. What person doesn't like to have a place (or several) to retreat to when they need a break from things?